Skybound.Gecko.GeckoWebBrowser.WindowCreator.CreateChromeWindow C# (CSharp) Method

            public nsIWebBrowserChrome CreateChromeWindow(nsIWebBrowserChrome parent, uint chromeFlags)
            {
                // for chrome windows, we can use the AppShellService to create the window using some built-in xulrunner code
                GeckoWindowFlags flags = (GeckoWindowFlags)chromeFlags;
                if ((flags & GeckoWindowFlags.OpenAsChrome) != 0)
                {
                      // obtain the services we need
                      nsIAppShellService appShellService = Xpcom.GetService<nsIAppShellService>("@mozilla.org/appshell/appShellService;1");

                      System.IntPtr ptr = (IntPtr)Xpcom.GetService(new Guid("2d96b3df-c051-11d1-a827-0040959a28c9"));
                      nsIAppShell appShell = (nsIAppShell)Marshal.GetObjectForIUnknown(ptr);

                      // create the child window
                      nsIXULWindow xulChild = appShellService.CreateTopLevelWindow(null, null, chromeFlags, -1, -1, appShell);

                      // this little gem allows the GeckoWebBrowser to be properly activated when it gains the focus again
                      if (parent is GeckoWebBrowser && (flags & GeckoWindowFlags.OpenAsDialog) != 0)
                      {
                        EventHandler gotFocus = null;
                        gotFocus = delegate (object sender, EventArgs e)
                        {
                            (sender as GeckoWebBrowser).GotFocus -= gotFocus;
                            (sender as GeckoWebBrowser).WebBrowserFocus.Activate();
                        };
                        (parent as GeckoWebBrowser).GotFocus += gotFocus;
                      }

                      // return the chrome
                      return Xpcom.QueryInterface<nsIWebBrowserChrome>(xulChild);
                }

                GeckoWebBrowser browser = parent as GeckoWebBrowser;
                if (browser != null)
                {
                    GeckoCreateWindowEventArgs e = new GeckoCreateWindowEventArgs((GeckoWindowFlags)chromeFlags);
                    browser.OnCreateWindow(e);

                    if (e.WebBrowser != null)
                    {
                        // set flags
                        ((nsIWebBrowserChrome)e.WebBrowser).SetChromeFlagsAttribute(chromeFlags);
                        return e.WebBrowser;
                    }

                    nsIAppShellService appShellService = Xpcom.GetService<nsIAppShellService>("@mozilla.org/appshell/appShellService;1");

                    System.IntPtr ptr = (IntPtr)Xpcom.GetService(new Guid("2d96b3df-c051-11d1-a827-0040959a28c9"));
                    nsIAppShell appShell = (nsIAppShell)Marshal.GetObjectForIUnknown(ptr);

                    nsIXULWindow xulChild = appShellService.CreateTopLevelWindow(null, null, chromeFlags, -1, -1, appShell);
                    return Xpcom.QueryInterface<nsIWebBrowserChrome>(xulChild);
                }
                return null;
            }